Method for extracting financial field event sentences in annual reports

The invention discloses a method for extracting financial field event sentences in annual reports. The method comprises the following specific steps: 1, inputting financial report data, 2, preprocessing the data, 3, selecting named entity recognition based on perceptron sequence labeling, 4, improving a keyword extraction algorithm based on TextRank, and 5, outputting to obtain text keywords. Themethod relates to the technical field of event sentence extraction in the financial field. According to the financial field event sentence extraction method in the annual report, the problems that named entities are ignored during word segmentation of a TextRank keyword extraction algorithm, a keyword extraction calculation algorithm is not ideal, and keyword extraction errors are caused due to the fact that the keyword extraction calculation algorithm is easily interfered by noise information are solved. 发明公开了一种年报中的金融领域事件句提取方法，具体步骤为：步骤1、输入财务报告数据，步骤2、对数据进行预处理，步骤3、选取基于感知机序列标注的命名实体识别，步骤4、改进基于TextRank的关键词提取算法，步骤5、输出得出文本关